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The interval timing default value, expressed in milliseconds, is recorded in the address
field. To set a new interval timing, enter three hexadecimal digits from the keypad. Press
the NE key to accept the default value or to accept the new value as entered from the
keypad.
DEFAULT
VALUE
I/~I/il
I I 1,?IOI
SEEK MODE PROMPT
TEST CONTINUATION
MODE FIELD
Figure C-9 Seek Mode Display
C.3.1.2 SEEK MODES
After the interval timing value is entered and the NE key pressed, the following display
appears.
The seek mode digit selects one of the nine seek operations listed on the Test Mode
Summary chart. The test continuation digit determines the conditions under which a
seek test is halted. When a zero is displayed, seek operations are halted if an error occurs.
When any other digit is displayed, seek operations continue to completion.
The seek mode default value is recorded in the address field. To set a new seek mode and
test continuation condition, enter two digits from the keypad. Press the NE key to accept
the default value or to accept the new value as entered from the keyboard.
Table C-5 summarizes the nine seek modes that can be selected.
MODE
NUMBER
2
3
Table C-5 Seek Modes
SEEK MODE
Single Seek
Repeat Seek
One Cylinder
DESCRIPTION
Seeks to destination cylinder (CL2) and stops.
To repeat, press the MR key and wait until the
read/write heads return to cylinder 000. Then
press the ST key.
Seeks directly from the low cylinder address to
the high cylinder address, and then from the
high cylinder to the low cylinder. The cycle is
repeated.
Seeks one cylinder at a time from the low
cylinder (CLl) to the high cylinder (CL2), and
then from the high cylinder to the low cylinder.
The cycle repeats. For example, with CLI
equal to 000 and CL2 equal to 100, seeks to
001, to 002, to ... , to 100. Then seeks to 099, to
098, to ... , to 000.
C-13
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